Altera Stratix - Page 565

Altera Corporation 14–17
January 2005 Stratix Device Handbook, Volume 2
Designing with 1.5-V Devices
Figure 14–15. EL7556BC: 5.0-V-to-1.5-V/6-A Synchronous Switching Regulator
Notes to Figures 14–13 to 14–15:
(1) These capacitors are ceramic capacitors.
(2) These capacitors are ceramic or tantalum capacitor.
(3) These are BAT54S fast diodes.
(4) D4 is only required for EL7556ACM.
(5) This is a Sprague 293D337X96R3 2X330μF capacitor.
(6) This is a Sprague 293D337X96R3 3X330μF capacitor.
C
11
(2)
0.22 μF
C
10
(6)
1.0 mF
C
5
(2)
1 μF
C
4
(1)
0.1 μF
C
6
(1)
0.1 μF
C
8
(1)
220 pF
C
7
(1)
39 pF
C
12
1.0 μF
C
9
(5)
660 μF
V
IN
TEST
PWRGD
OT
FB1
OUTEN
C
SLOPE
V
DD
V
SSP
V
SSP
V
SSP
V
SSP
V
SSP
V
CC2DET
V
IN
V
IN
C
REF
C
OSC
FB2
C
2V
V
HI
LX
LX
V
SSP
V
SSP
LX
LX
C
P
V
SS
EL7556BC
R
5
5.1 Ω
R
4
100 Ω
L
1
2.5 μH
R
6
39.2 Ω
R
1
20 Ω
D
4
Optional (3), (4)
V
OUT
= 1.5 V × (1 + )
R
3
50 Ω
V
IN
D
3
(3)
D
2
(3)
D
1
(3)
R
3
R
4
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14